Gas-engine.



B. M. ASLAKSON.

Patented Aug. 30, 1910.

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' Patented Aug. 30, 1910.

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DIUIIIJCIHIIEIJD B. M. ASLAKSON.

GAS ENGINE.

APPLICATION FILED 001 .14, 1907.

Patented Aug. 30, 1910.

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INVENTOR WITNESSES: 61:5 45

BAXTER M. ASLAKSON, OF SALEM, OHIO.

GAS-ENGIN E.

Specification of Letters Patent.

Patented Aug. 30,, 1910.

Application filed October 14, 1907. Serial No. 897,414.

To all whom it may concern:

Be it known that I, BAXTER M. ASLAKSON, a citizen of the United States, and a resident of Salem, in the county of Golumbiana and State of Ohio, have invented certain new and useful Improvements in Gas-Engines, of which the following is a specification.

My invention relates to gas engines and particularly to the construction of the cylinders and their particular relation in the engine.

The object of my invention is to provide a cylinder casing having cylinders therein which are removable and which are cast to present ports for communicating with ports in the casing.

My invention is clearly set forth in the subsequent detailed description and illustrated in the accompanying drawings, in which latter,

Figure 1, is a longitudinal sectional View through the casing and cylinders of a gas engine, and illustrating a preferred form of my invention. Fig. 2, is a. longitudinal sectional view through the cylinder casing. Figs. 3 and 4, are lon itudinal sectional views of the cylinders which fit in the upper bore of the casing and into which the gases are first admitted from the casing. Figs. 5

and 6, are longitudinal sectional views of the cylinders which have the exhaust ports located therein. Fig. 7, is an end view of the casing viewed from the left. Fig. 8, is a cross sectional view through the casing and cylinders on line 00-:2: of Fig. 1. V

A, indicates the casing, which is provided with air inlet chambers a, a, which are annular in form and extend around the cylinders, in open communication with the cylinder inlet ports B. A, is also an annular chamber through which the gas flows on its way to the interior of the cylinders B, by

way of ports B The cylinders B and C are provided with flanged shoulders C, which abut the casing ends, which ends are machined to present smooth faces, and the cylinders B, having been forced by pressure into their proper positions in the casing and fitting the bores or bearing surfaces A tightly to effect a fluid tight joint, and contribute to provide chambers DD to serve as water jackets. These cylinders may be removed when worn and new ones substituted. The ports B are formed by notching the inner end of a cylinder as illustrated,

thus permitting the projecting. parts to serve in holding the piston rings from expanding when passing the inner ends of the cylinders. g

It will be noted that the metal on line Z-Z (Fig. 2) of the casing A, is free to expand longitudinally without bringing any strain on the cylinders, and that the cylinders may expand and contract independent of the casing. The cylinders C, are provided with ports (1 through which the gas is exhausted. These cylinders are provided with heads E, which may be duplicates of each other, and which heads are bolted through the cylinder flanges to the casi The cylinder heads have openings E through which the piston rods F, and tail rods G, may pass, suitable stufiing boxes H, being in co-relation to said openings. Said heads contain water jacket chambers I. Iassageways J, are formed in the heads to estab ish communication between the respective ends of the adjacent cylinders. Be-

tween and parallel with the tail rods G, is a guide rod K, which is supported at one end by a projection L,

frame M, which is bolted to said head. The piston rods are connected to a combined yoke and cross head at one end and the tail rods G are connected by a yoke at the other 'end which is guided by the guide rod K.

Flanges N, (Figs. 7 and 8), are provided for the casing A, by means of which the casing may be firmly frame work. Pistons O, operate, one, in the upper cylinder and one inthe lower cylinder, and serve as valves which control the inlet and exhaust ports.

In operation, assuming the pistons to be in the position shown, the burned gases have just exhausted through ports 0 to the atmosphere and scavenging air has been admitted throu h ports B and followed by gas entering t rough ports B The pistons, traveling to the right, close the ports, compress the gases which are burned to produce power on the return stroke, the pistons having passed over and uncovered the left hand series of ports a and gas ports B thus exhausting the gases burned .in the left hand end of the cylinders, and receiving its new charge of gas for the next power stroke in this end of the cylinders. The general construction and operation of cast on the contiguouscylinder head, and at the other end by the secured to the engine this en e will bedescribed and claimed conveniently in anot er application for patent, so that further description herein is not deemed necessaq.

The c est P, has flanges whereby it can be bolted in position on the easing A, and said chest contains a central compartment P, and compartments 1?, P, at either side of the compartment P, said compartments being in communicating relation with the air and gas ports a A, in'the casing, to convey air and gas under pressure thereto.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent,*is,-

1. A casing provided with se arate air and gas ports, two inde endent cy inders detachably arranged en to end therein and having ports which re 'ster with the air ports, one of said cylin ers also having receases notched therein at its inner end and forming gas ports which register with the gas ports in t e casing 2. A casing provi ed with separate air and ports, a pluralit of independent cylin ers therein arrange end to end and having ports for registering with the air ports, one of said cylinders also having recesses notched therein at its inner end and forming gas ports which register with the as port of the casing, said casing and cylinders forming water chambers.

3. A casing provided with ports and havin two bores side by side and faced ends, in ependent cylinders in said bores arranged end to end in pairs and having ports re stering with said casing ports, each cylin er havmg a flange abutting against the face of the casing, a head at each end having a flange abutting against the cylinder each workin cylinder havin flanges, and bolts holding said head and cylinder flanges to the casing.

4. A casing provided with orts and having{ two bores side by side, in ependent cylin ers in said bores arranggd end to end in pairs and forming the wor fng cylinders of the engine and having ports registering with the ports in the casing and co-acting with the casing to form water chambers, a c linder head at each end of the casing, each ead having an open communicating passage between the working cylinders, a piston in a plston rod and a tail r which extend t rough the respective cylinder heads, a oke connecting said tail rods and a guide or said yoke.

5. An engine comprising a cross head, a casing provided with orts and having two bores side by side, in ependent cylinders in said bores arranged end to end in airs and forming the working cylinders o the engine and having ports registering with the ports in the casing and co-acting with the casing to form water chambers, a cylinder head at each end of the casing, each head having an open communicating passage between the working cylinders, a piston in each working cylinder havin a plsto'n rod and a tail rod which exten through the res ective cylinder heads, a yoke connectin sai tail rods, a ide for said (yoke an said piston rods emg connecte to said cross head.

Signed at Salem in the county of Columbiana and State of Ohio this 16th day of September A. D. 1907.

BAXTER M. ASLAKSON. 

